Synthesis and antifungal activity of some new 3-hydroxy-2-(1-phenyl-3-aryl-4-pyrazolyl) chromones
作者:Om Prakash、Rajesh Kumar、Vipin Parkash
DOI:10.1016/j.ejmech.2007.04.004
日期:2008.2
ryl-4-pyrazolyl) chromones 4a-g have been synthesized by the oxidation of 2-hydroxychalcone analogues of pyrazole 3a-g with hydrogen peroxide (H(2)O(2)) in KOH-MeOH by Algar Flynn Oymanda (AFO) reaction. The structures of the compounds 4 were established by the combined use of (1)H NMR, IR and mass spectra. All the seven compounds were tested in vitro for their antifungal activity against three phytopathogenic
通过用过氧化氢将吡唑3a-g的2-羟基查耳酮类似物氧化(H(2)O (2))在KOH-MeOH中通过Algar Flynn Oymanda(AFO)反应。化合物4的结构通过结合使用(1)1 H NMR,IR和质谱确定。体外测试了所有这七个化合物对三种植物病原真菌(蠕虫属,尖孢镰刀菌和链格孢菌)的抗真菌活性。五种化合物4a,4b,4c,4e和4f与市售抗真菌化合物Actidione(环己酰亚胺)相比,对所有三种植物病原真菌的抗真菌活性均高得多。
A Novel One-pot Synthesis of 2<i>H</i>-4-Chlorochromenes via the Vilsmeier Reaction of 2′-Hydroxychalcones
A novel versatile one-pot synthesis of 2H-4-chlorochromenes from 2′-hydroxychalcones have been developed. This method has been investigated for the synthesis of 2H-4-chlorochromen-2-ylpyrazoles.
Microwave-assisted synthesis of 1-{2-[(1-benzyl-1H-1,2,3-triazol-4-yl)methoxy]phenyl}-3-(3-aryl-1-phenyl-1H-pyrazol-4-yl)prop-2-en-1-ones and their antimicrobial activity
作者:D. Ashok、K. Padmavati
DOI:10.1134/s1070363216040253
日期:2016.4
A series of new (E)-1-2-[(1-benzyl-1H-1,2,3-triazol-4-yl)methoxy]phenyl}-3-(3-aryl-1-phenyl-1H-pyrazol-4-yl)prop-2-en-1-ones (3a-3i) has been synthesized via copper-catalyzed 1,3-dipolar azide-alkyne cycloaddition reaction (CuAAC) of benzyl azide with substituted (E)-3-(3-aryl-1-phenyl-1H-pyrazol-4-yl)-1-[2-(prop-2-ynyloxy)phenyl]prop-2-en-1-ones (2a-2i). The synthesized compounds have been characterized by their IR, H-l, C-13 NMR spectra, and mass spectroscopy data. All the compounds have been screened for antimicrobial activity.
REDDY K. R. S.; SRIMANNARAYANA G.; SUBBA RAO N. V., PROC. INDIAN ACAD. SCI. A <PIAC-AP>, 1975, 81, NO 5, 197-203
作者:REDDY K. R. S.、 SRIMANNARAYANA G.、 SUBBA RAO N. V.
DOI:——
日期:——
Design, Synthesis, and Evaluation of Some Novel Heterocycles Bearing Pyrazole Moiety as Potential Anticancer Agents
作者:Nancy Abdelgawad、Mahmoud F. Ismail、Mohamed H. Hekal、Magda I. Marzouk
DOI:10.1002/jhet.3544
日期:2019.6
were exploited as starting materials for the synthesis of novel substituted chalconated pyrazole derivative. The proclivity of this compound towards carbon and nitrogen nucleophiles such as malononitrile, diethyl malonate, ethyl cyanoacetate, ethyl acetoacetate, semicarbazide, thiosemicarbazide, and hydroxylamine has been investigated. The structures of all synthesized compounds were ascertained by